What “solved” it for me was to use the latest DLSS and Frame Generation .dll’s rather than the ones that ship with MSFS. Had one crash since I changed these (and I think it was because msfs reinstalled their old version in the beta update)
Try v1.0.7.0 of the Frame Generation .dll - “nvngx_dlssg.dll” (msfs ships with the older v1.0.1.0)
Also update to the latest DLSS .dll - “nvngx_dlss.dll” (msfs ships with an older version of this as well)
Both can be downloaded from TechPowerUp -
Been doing a 'Round Britain in the Edgely Optica and had several sessions of 4 to 6 hours with not a single crash. Frame Generation is amazing (when it works;-))